|
Post by HMC710 on Dec 29, 2013 21:11:23 GMT -5
Went to the gun show up in Greenville today to see what the area had to offer. It was AR's galore. The highlight was a display of Savage Model 99's spanning 100 years. I'll post pics later. Was looking for Tokarev mags but only saw a couple with the new semi auto version of the PPs-43 pistol. One thing I did pick up was a contender barrel in 30 Herrett. I've had the dies and converted some 6.8 brass but haven't done a barrel yet. I can't remember if I found a reamer someplace or not. Will have to dig up my tool box next time I'm home. Marty ter Weeme talked about this one years ago and I ran the numbers on it and it looks good on paper. This was before the 30 Remington AR. One advantage is mag capacity which we should be able to use stock 762x39 mags. The 30AR is a single stack and is limited to about 4-5 rounds. It does give up 100 fps or so to the 30 AR, but we should hit 2500 fps no problem with it. Now that I've got a barrel and dies, time to load some up! Have really been thinking about this one since the 300 Black Out became so popular. It will out perform it in the high velocity area so lets see what it will do.
|
|
|
Post by HMC710 on Jan 29, 2014 23:27:36 GMT -5
Left all my 30 Herrett stuff back home so will gather it all up next trip and see if I can add a barrel to my stack of stuff to get done when Im home. Been planning this one for a while. Speaking of expensive, have you checked out 6.8 brass lately?!?!?! Got to get me some more so here we go again...... Stay tuned on this, the paper numbers look interesting, we'll see what the chrono decides, will it be a real alternative to the 7.62x39?
|
|
|
Post by HMC710 on Feb 11, 2014 8:26:23 GMT -5
Where is that reamer.......
|
|
|
Post by HMC710 on Feb 22, 2014 22:07:36 GMT -5
OK, don't have a reamer. Called Dave Manson and we discussed the "standard" 30 Herrett Rimless and I'm going to run some profiles through quick design to see where we are at. My plan is for 110 - 130 gr bullets but will also see how the 147 FMJ's play out. This will be another one of those, when we have time, projects.....
|
|
|
Post by HMC710 on Jan 31, 2015 22:18:23 GMT -5
Did some loading today while I had the chance and dug out the 30 HRT stuff. I trimmed the brass down to 1.610" after forming through the 30 Harrett full length size die. Loaded some of the pulled 147 FMJ's and Hornady 125gr SSP all over 20gr of 4227. QL shows 1700 fps with the 147's from a 10" barrel so we'll see how it goes. On the left is a new 6.8 case, 125 gr SSP 30 HRT, 147gr 30 HRT, and 110gr JHP 7.62x39 I've loaded these to the crimp groove which puts the 147 gr about .100 long and the 125 about .040 long. I'll run these through the contender and see what happens. The necks are a shade long for the short 30 cal bullets so I might trim them back a bit but we'll see how it goes.
|
|
|
Post by HMC710 on Feb 2, 2015 18:36:33 GMT -5
Took the Contender out to the range Sunday t test fire the 30 HRT loads. I tried the 147 FMJ's and Hornady 125 SSP's both over 20 gr of IMR 4227. Fired out of the 10" barrel I got 2039 fps on the 147's and 2151 on the 125's. Now this is from a 10" barrel. Both fired cases practically dropped out of the chamber which is a good thing because there is no rim on the SPC case for a chamber designed for the 30-30 case. I did get the primers set back a few thousands but that could just be a minor headspace issue. I'll back off the sizing die a touch and see what happens. QL says I have about 2.5 more grains of powder capacity plus it already registered 200 fps faster than predicted so we'll have to keep an eye on pressure but this thing is going to rock! The goal was to outperform the 7.62x39 with standard components and so far it looks promising.
|
|
|
Post by HMC710 on Aug 10, 2017 23:43:42 GMT -5
Just a shout out here. From a math stand point, the 30 HRT could be hands down the most "put your word of the day here" per pound AR-15 round out there. I have not done much on this only because the guys over at AR Performance have already done it and I suggest you check them out. I first got parts from them when they offered their "super bolts" for the 762x39 and we built our 250 SS and 257 ARS rounds. They also did a custom bolt&extension with a .473" dia bolt face that I built 45 acp guns with. Since that time they now offer a 750SD bolt that is the new "super bolt". These guys are the real deal and knock out some great stuff. Some day I'll do a 30 HRT...and use their stuff...
|
|
|
Post by HMC710 on Jan 17, 2022 21:13:19 GMT -5
Reamer should be here in 12 weeks.....
|
|
|
Post by HMC710 on Apr 28, 2022 18:52:16 GMT -5
Reamer arrived just in time for me to get shipped out for 4 weeks!
|
|
|
Post by paulsblackrifles on May 2, 2022 8:15:38 GMT -5
Sounds good, I picked up a few new Contenders last fall. I'm surprised how fun it is to shoot a suppressed Encore in .308! Nothing as nice as these cartridges that you design.
|
|
|
Post by HMC710 on Oct 17, 2023 7:28:43 GMT -5
S L O W L Y getting all the 30 Herrett stuff organized so we can get an upper built.
|
|
|
Post by HMC710 on Nov 7, 2023 9:17:43 GMT -5
Nothing new to add other than the "Herrett Pile" is getting organized.
|
|
|
Post by HMC710 on Jan 21, 2024 11:02:01 GMT -5
Spun up 16" barrel last week and reviewing all my Herrett info. Fully sized and trimmed down to 1.61" is the original 30 HRT from Teppu Jutsu designed for the AR. There is another outfit that uses 6.8 brass which gives you about .050" more length and calls it the American .30. We also sized some 6.8 basic brass, but its too long for the AR-15 mag using available bullets.
The other variant is the 300 BO which we deep chambered to fit a full size 556 case, which is about 5mm longer that the 762x40 that came out a while back. Using short stubby bullets we are getting good results and we call it the 30 VAR, but thats another thread.
I'm going to stick with the std HRT length at this point and get some cases trimmed down and sized. The 6.8 basic brass wall thickness was a bit much and didn't size down well so I got some 6.8 brass on the way.
|
|
|
Post by HMC710 on Feb 13, 2024 20:09:41 GMT -5
Wow, two posts in the same year! We are moving now!!!! I played around with the new 6.8 brass and fully sized a few cases and that requires a final case trim down to 1.61", the original 30 HRT that Marty developed. Dropping in a 125 gr spire was over length for std AR mags. So we picked up some lighter bullets, up to 112 gr, and that left plenty of room to run the full size 6.8 brass and still be under OAL needed. We then shimmed up the shell holder to get the right height on the sizer die, then re-worked the decapper ball to give the expander a nice smooth taper and now std 6.8 brass is sized and expanded in one pass. Loading up with some rounds with 4198 was much too slow of powder so we had a new can of 4227 and the faster powder worked much better. After tuning the gas system we brough the 30 out to the range and checked out our new to us Lab Radar chronograph. YAY! I' ve been without a chrono for a couple of years now and its nice to set the Lab Radar unit on the bench and fire away. Fired off 10 rounds with two different 110 gr bullets and average velocity was just over 2500 fps while fireforming the new 6.8 brass. Got some slight primer flattening but no bolt swipe so we'll resized these cases to check our die setting and reload these back up. Now that the cases are fireformed, pressures should drop a bit and we'll see how it goes. Progress!
|
|
|
Post by HMC710 on Feb 25, 2024 8:27:11 GMT -5
Working on the unofficial name of the new 30. Its not a Harrett, its not Marty's HRT, I don't know if its close to the 30 TAC that was around a few years ago, 30 HAR just doesn't sound right, so I'm switching to 30 SPC as it takes a standard 6.8 case. These are the same loads as the fire formed loads with the formed cases, 4227 powder and 110gr sp bullets. 2553 avg fps. We definitely gained some case capacity after fire forming so now it will come to optimum powder selection.
|
|